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import os
import sys
def _config_enabled(symbol, default=False):
config_path = os.path.join(os.path.dirname(__file__), '.config')
try:
with open(config_path, 'r', encoding='utf-8') as cfg:
text = cfg.read()
if f'CONFIG_{symbol}=y' in text:
return True
if f'# CONFIG_{symbol} is not set' in text:
return False
return default
except OSError:
return default
# toolchains options
ARCH='arm'
CPU='cortex-r52'
CROSS_TOOL='gcc'
if os.getenv('RTT_CC'):
CROSS_TOOL = os.getenv('RTT_CC')
if os.getenv('RTT_ROOT'):
RTT_ROOT = os.getenv('RTT_ROOT')
# cross_tool provides the cross compiler
if CROSS_TOOL == 'gcc':
PLATFORM = 'gcc'
EXEC_PATH = r'/opt/toolchain/gcc-arm-none-eabi-10.3-2021.10/bin'
if os.getenv('RTT_EXEC_PATH'):
EXEC_PATH = os.getenv('RTT_EXEC_PATH')
# BUILD = 'debug'
BUILD = 'release'
if PLATFORM == 'gcc':
# toolchains
PREFIX = 'arm-none-eabi-'
CC = PREFIX + 'gcc'
AS = PREFIX + 'gcc'
AR = PREFIX + 'ar'
CXX = PREFIX + 'g++'
LINK = PREFIX + 'gcc'
TARGET_EXT = 'elf'
SIZE = PREFIX + 'size'
OBJDUMP = PREFIX + 'objdump'
OBJCPY = PREFIX + 'objcopy'
NM = PREFIX + 'nm'
if _config_enabled('RT_USING_FPU', default=True):
DEVICE = ' -mcpu=cortex-r52 -marm -mfloat-abi=hard -mfpu=vfpv3-d16 -mlittle-endian'
else:
DEVICE = ' -mcpu=cortex-r52 -marm -mfloat-abi=soft -mgeneral-regs-only -mlittle-endian'
COMMON_CFLAGS = (
' -fno-inline'
' -ffunction-sections'
' -fdata-sections'
' -fdiagnostics-parseable-fixits'
' -fmessage-length=0'
' -funsigned-char'
' -funsigned-bitfields'
' -fno-common'
' -fno-strict-aliasing'
' -funwind-tables'
' -Dgcc'
)
CFLAGS = DEVICE + COMMON_CFLAGS
AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp'
LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,system_vector -lgcc -T link.lds'
if BUILD == 'debug':
CFLAGS += ' -Og -ggdb3 -gdwarf-4'
AFLAGS += ' -ggdb3 -gdwarf-4'
else:
CFLAGS += ' -O2'
CXXFLAGS = CFLAGS
POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'
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